How many moles of HNO₃ will be produced from the reaction of 45.0 g of NO₂ with excess water in the following chemical reaction? 3 NO₂(g) + H₂O (l) → 2 HNO₃(g) + NO(g)

How air particles exert a pressure on the inside of the balloon

Several kinds of bears are found on earth. most bears are brown or black, but one type of bear, the polar bear, is white. what process led to this difference in fur color? explain your answer.

Ais a mountain created from eruptions of lava, ash, rocks, and hot gases.